What is .AA file extension?
Digital audio format used by Audible to store audio books; designed for storing spoken word audio and supports chapter markers, bookmarks, etc.
Audible files are supported by the Apple iPod, Creative Zen, SanDisk Sansa, various GPS devices, and the Amazon Kindle.
NOTE: AA audio files can be converted to the more compatible .MP3 format using a program like Tunebite, TuneCab, or SoundTaxi Media Suite.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.